An ARX Triathlete Case Study
Back in January of 2020, an amateur triathlete named Eric Anderson began using an ARX program for his strength training.
He runs The Ocean Lab here in Austin, a float therapy and infrared sauna facility that focuses on de-stressing and recovery. They bill themselves as “the most relaxing place in Austin,” and boy was he going to need it after his ARX workouts!
Eric was very consistent over the course of 2020 and into 2021, performing one weekly ARX workout lasting about fifteen minutes, a huge reduction when compared with the weekly time commitment often recommended for endurance athletes.
He experienced a doubling in strength of all major muscle groups within 4-6 months, and kept gradually increasing his strength from there.
He reports that during this time he—a seasoned athlete with years of consistent training under his belt—gained twelve pounds of muscle as a result of his ARX workouts. Adding weight might seem like a drawback for an endurance athlete, but the truth is actually the opposite.
ARX’s eccentric loading also recruits satellite cells to become new muscle tissue, hence his weight increase.
His training outside of ARX, though, was obviously focused on endurance and muscular work capacity. So the new muscle tissue that was being built was having a heavy demand placed on it for the performance of low-intensity, steady-state work that could be maintained for longer periods of time. And because the muscle tissue responds to imposed demands, the new muscle tissue experienced upgregulation of the enzymes involved in fuel metabolism.
In other words, the performance of the new muscle far outweighed—no pun intended—the negative of having the additional weight to move through a triathlon course.
Again, his total monthly exercise time on ARX was just over an hour per month, so he found it very easy to fit into his training schedule, his busy work schedule running his business, and his personal life. As you can imagine, triathletes are extremely busy logging hours each week, so it was imperative that his strength training be as brief and as effective as possible.
Here are some images he took to compare his physique before and after a few months of his ARX training program: